Improvement in wheat-drills



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R. W.. CAMP-BELL, OFv SPURGEON, INDIANA;

Letters Patent No. 92,160, dated .Tally 6, 1869.

IMPROVEMENT IN WHEAT-DRILLS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

.Be it known that. I., R. W. CAMPBELL, of Spurgeon, in the county of Pike, and State of Indiana, have invented a new and useful Improvement in Wheat- Drills; and I do hereby declare that the following is a full and exact description ofthe same, reference being had to the accompanying drawings', and tothe 1ctters of reference marked thereon.

This invention relates to certain improvements in wheat-drills, whereby the plows thereof are raised and lowered, and their depth ofractiou regulated at will; also, to a device for measuring ground, as will hereinafter more fully appear.

In the drawings- Fignre l is a sectional view of my invention through the line :t-x, tig. 2. y

Figure 2 is a plan view of the same, with scat detached.

To enable others skilled in the art to make and use my invention, I will proceed to describe fully its construction and operation.

A A represent the side'beams of the machine, connected in front by the cross-beam' A, and near the centre by the beam A', to whichi's-attached the drivers seat a. l

a' represents a. transverse rod immediately in the rear ot' the beam A, on which are pivotcd the bifurcated arms c of the beams c, the same running backward a little beyond the cross-beam A, where they bend downward, forming au acute angle, and terminate at the plow-points D.

B represents a transverse rod, pivoted in the projections B B', in the rear of the beam, which supports the .drivers seat. The rod B is provided with the arms B" B", 85o., which curve downward, and are attached, by chains or-otherwise, to the beams al, their function being to elevate the same with their attachrients, which is accomplished by means of the curved rod B, the same heilig rigidly attached to the centre of rod B, and, passing under the beam A'", is attached, by means of the connecting-god b, with therear end of the tongue b', which has a longitudinal motion in bearings between the braces b" b", and in the under surface of the beam A", which is providedzwith a t'ictionrolle1',x. The tongue is prevented'tiom,beingwholly withdrawn by a horizontal slot within the same, inside the bearing, which is providedwith a pin passing through the same, and arresting it at its extreme outward limit.

b' represents the double tree, which is attached to the tongue by the pivot b"", the same passing through an elongated slot, U, in the plate C', to admit of the sliding ofthe tongue.

1n the rear ofthe double-tree 11"', and pivoted to the braces b b" by the bifurcated rod Uf, is the level' 0', near the centre ot' which is the vertical pin'or pivot c, which passes through the beam A", and drops into a corresponding orilice in the tongue b', when the same comes in connection therewith, .thus holding it securely in position.

To release the pin c, the treadle c is provided, one end ot' which is pivoted to the rear end of the lever 0', andthe other to the beam A. By depressing the foot- )iece c" the other end of the same is raised and with it the lever C' and pin c- 'Io the descendingr sides of the angular beams a'" are riveted the Asheet-iron tubes or boots c', which latter terminate a little above the plow-points I), which are rigidly attached to the beams c, constituting the seed-drills.

D' represents coulters, the upper ends of which are also rigidly attached to the beams ai nearthe angle thereof, these lower ends being strengthened by the diagonal braces D,which are attached to the rod c.

To the lower ends of the coulters D are attached the bifurcated guides D'", which are rendered adjustable by means ofthe oritices d d, 8vo., in the coulters, their function heilig to regulate the depth of action of the coulters and plows.

d represents a kind of odometer, which consists of Ythe plate d, with bifuricated arms t" d", pivoted to the beam A" and the parallel arm tl, which, in connection withthe plated', forms the bearings of the` cog-wheels d5 and d5, the former of which engages with a projection, E on the axle E, and, at every revolution of the latter is revolved one tooth. It is also provided with a projection, which engages the other wheel d6, which is connected by its shaft with an eccentric, Ei, on the outside of the plate d', which latter is provided wit-h a tooth or projection.

e. represents a spring, operating in connection with the eccentric E2, which bears closely on the'periphcry of the latter, and, when raised by the projection, snaps y vshaft Il".

Ihe apertures in the bottom of the seed-box are regulated by a horizontal slide, operated by the lever Il and connecting-rod f.

fl represents a cog-wheel on the axle E, which en gages, through the idle-wheel f i, with the wheel f3, on shaft Il, and iliiparts motion thereto.

The connection of the seed-box with the boots c is made by leather or other tubes, which extend from the orilices i-n the bottom of the same down into the tubes, and are constructed somewhat smaller in size, to admit of the same having a free vert-ical motion thereon.

The operation of my invention is as follows: When the machine is in working order, with the plows at their full depth, it is necessary only to back the team, by which means the sliding tongue is rforced The depth of the plows is regulated by moving the bifurcated guides D3 up or down, as above described. The quantity of `grain delivered is also e'ectually regnlatedV by the slide.

Having thus fully described my invention,

What I claim as new, and desire to secure by Letters Patent, is-

1. The adjustable guides E3, in combination with coulters D and drills c", or their equivalents, as and for the purpose set forth.

2. The above-described arrangement for elevating the drills, constructed substantially of the sliding tongue b', lever c, pivot o, treadle c, connecting-rod b, curved rod B, rod B, with arms B2 B2, 85o., arranged and operated substantially as described.

This specification signed and witnessed this 18th day of February, 1869.

R. W. CAMPBELL.

XVitnesses:

J. W. HUMPBREY, J. M. ZIMMERMAN. 

